Symptoms. Buick GL7 (Export) 2000

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2000 🢒 GL7 (Export) 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Symptoms

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to:

•	HVAC Blower Controls Circuit Description

•	HVAC Compressor Controls Circuit Description

•	HVAC Air Delivery/Temperature Control Circuit Description

•	Inspect for aftermarket devices which could affect the operation of the HVAC System. Refer to Checking Aftermarket Accessories in Wiring Systems.

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

•	HVAC Compressor Clutch Does Not Engage

•	HVAC Compressor Clutch Does Not Disengage

•	Blower Motor Inoperative at Any Speed

•	Blower Motor Operates at High Speed Only

•	Blower Motor Inoperative in One Speed Only

•	Blower Motor High Speed Inoperative

•	Blower Motor Always On

•	Defrost Air Inoperative

•	Air Recirculation Inoperative

•	Temperature Control Inoperative

•	Leak Testing in Heating, Ventilation and Air Conditioning

•	Cooling Insufficient - Air Conditioning (A/C) System in Heating, Ventilation and Air Conditioning

•	Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone A in Heating, Ventilation and Air Conditioning

•	Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone B in Heating, Ventilation and Air Conditioning

•	Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone C in Heating, Ventilation and Air Conditioning

•	Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone D in Heating, Ventilation and Air Conditioning

•	Defrosting Insufficient in Heating, Ventilation and Air Conditioning

•	Heating Insufficient in Heating, Ventilation and Air Conditioning

•	Noise Diagnosis - Blower Motor in Heating, Ventilation and Air Conditioning

•	Noise Diagnosis - Air Conditioning (A/C) System in Heating, Ventilation and Air Conditioning

•	Cold Drafts on Floor in Heating, Ventilation and Air Conditioning

•	Odor Diagnosis in Heating, Ventilation and Air Conditioning